Watches

Yeah from my napkin calculations from distance from colorado to los angeles, I would get a time delay of 0.0045 seconds using the speed of light. But let's say for the sake of interference and curvature of the earth stuff, we double that number, you would get 0.009. With that number, I still won't notice that delay by much. So I wonder why I'm getting like 0.25 seconds of delay which is a significantly large number. It makes me want to get several atomic clock devices to see if it's an issue with the watch or my environment. I doubt the watch is the issue though since I trust Casio's QC is very good, so it must be my setup.